/*
 * Copyright (c) 2021, Peter Abeles. All Rights Reserved.
 *
 * This file is part of BoofCV (http://boofcv.org).
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package boofcv.struct.convolve;

/**
 * Floating point 1D convolution kernel that extends {@link Kernel1D}.
 *
 * <p>
 * WARNING: Do not modify. Automatically generated by {@link boofcv.struct.convolve.GenerateKernel1D}.
 * </p>
 *
 * @author Peter Abeles
 */
public class Kernel1D_F64 extends Kernel1D {

	public double[] data;

	/**
	 * Creates a new kernel whose initial values are specified by "data" and length is "width".
	 * The offset will be set to width/2
	 *
	 * @param data The value of the kernel. Not modified. Reference is not saved.
	 * @param width The kernels width.
	 */
	public Kernel1D_F64( double[] data, int width ) {
		this(data, width, width/2);
	}

	/**
	 * Creates a kernel with elements equal to 'data' and with the specified 'width' plus 'offset'
	 *
	 * @param data The value of the kernel. Not modified. Reference is not saved.
	 * @param width The kernels width.
	 * @param offset Location of the origin in the array
	 */
	public Kernel1D_F64( double[] data, int width, int offset ) {
		super(width, offset);

		this.data = new double[width];
		System.arraycopy(data, 0, this.data, 0, width);
	}

	/**
	 * Create a kernel with elements initialized to zero. Offset is automatically
	 * set to width/2.
	 *
	 * @param width How wide the kernel is.
	 */
	public Kernel1D_F64( int width ) {
		this(width, width/2);
	}

	/**
	 * Create a kernel whose elements initialized to zero.
	 *
	 * @param width How wide the kernel is.
	 * @param offset Location of the origin in the array
	 */
	public Kernel1D_F64( int width, int offset ) {
		super(width, offset);
		data = new double[width];
	}

	protected Kernel1D_F64() {
	}

	@Override
	public /**/double /**/getDouble( int index ) {
		return data[index];
	}

	@Override
	public void setD( int index, /**/double value ) {
		data[index] = (double) value;
	}

	/**
	 * Creates a kernel whose elements are the specified data array and has
	 * the specified width.
	 *
	 * @param data The array who will be the kernel's data. Reference is saved.
	 * @param width The kernel's width.
	 * @param offset Location of the origin in the array
	 * @return A new kernel.
	 */
	public static Kernel1D_F64 wrap( double[] data, int width, int offset ) {
		Kernel1D_F64 ret = new Kernel1D_F64();
		ret.data = data;
		ret.width = width;
		ret.offset = offset;

		return ret;
	}

	@Override
	public Kernel1D_F64 copy() {
		Kernel1D_F64 ret = new Kernel1D_F64(width, offset);
		System.arraycopy(data, 0, ret.data, 0, ret.width);
		return ret;
	}

	@Override
	public boolean isInteger() {
		return false;
	}

	public double get( int i ) {
		return data[i];
	}

	public double computeSum() {
		double sum = 0;
		for (int i = 0; i < data.length; i++) {
			sum += data[i];
		}

		return sum;
	}

	public double[] getData() {
		return data;
	}

	public void print() {
		for (int i = 0; i < width; i++) {
			System.out.printf("%6.3f ", data[i]);
		}
		System.out.println();
	}
}
